Process for treating hanks or cheeses of yarns with liquids



y 2, 1933- P. SPIINDLER I 1,906,492

PROCESS FOR TREATING HANKS OR CHEESES OF YARNS WITH LIQUIDS Filed June 24. 1929 atented May 2, 39

UNITED STATES meet PATENT OFFICE PAIIIi SPINDLE'B, OI EILDEN, GERMANY, ASSIGNOR TO THE FIRM SONDERMANN U. 00.,

OF GUMMERSBACH, GERMANY PROCESS FOR TREATIN G HANKS OB CHEESES OF YARNS WITH LIQUIDS Application filed June 24, 1929,Serial No. 878,184, and in Germany June 26, 1928.

This invention has reference to the art of treatin hanks, cops and similar or equivalent bodies of am in different conditions with liquids an it relates in particular to the treatment of yarn made of artificial silk and of similar products which are usually obtained in the spinning operation in the form of so-called spinning cakes, hanks, skeins and other bodies according to the different instrumentalities, reels, rollers, drums or similar or equivalent winding means which have been employed in order to receive and collect the threads obtained in the spinning operation. In the manufacture of artificial s1lk and similar products it becomes necessary to treat the textile material obtained by the winding up of the yarn with different liquids in order to convert these products into their available and marketable condition. Thus it is usually necessary to remove the residue of the spinning bath contained therein from the freshly spun bodies of yarn, this operation being usually effected by a washing process. In 2 the case of artificial silk obtained by the copper treating process the threads have to be treated with weak acid, and in the case of the so-called viscose silk an additional treatment with alkaline desulphurizing 0 baths becomes necessary, and in the majorit of cases the threads are treated as-a finis g step with a weak soap solution. I

In accordance with the previous art this treatment has been ordinarily eifected by freely suspending the yarn bodies and by causing the acting liquid to drip upon the suspended hanks or cops of yarn which may preferably be kept under difi'erent degrees of tension. According to another suggestion 'for the treatment of yarns with liquid, the yarn bodies were disposed upon a horizontal support and preferably in the fiat condition, and while thus supported were rinsed with the particular liquid. Attempts have also 4 been made to employ centrifugal action for this treatment by arranging the wound bodies of yarn upon the vertical walls of a centrifugal machine and causing the liquid under the action of centrifugal force to pass 5 through said material. With all these kinds of treatment according to the previous art the bodies of yarn are more or less deformed and the different layers of thread are disturbed and entangled, so that the bodies of yarn cannot be conveniently unwound after the treatment. Then there is the difficulty that these various modes of treatment require a considerable amount of time inasmuch as experience has shown that the bulk of the acting liquid escapes through loose and other accidentally occurring places or portions of greater permeability in the yarn which thereby do not receive the full treatment required, while other more densely wound orotherwise relatively impermeable portions receive onl a comparatively smaller amount of liquid so that these processes mostly fail to produce homogeneous and uniform products.

Now this inventionis intended to overcome these difficulties by a novel kind of treatment and apparatus devised for this purpose and by means of which the period of treatment may be considerably shortened. In addition, the acting liquid is completely utilized in the new method, so that a considerably smaller amount of the lquid than heretofore will be required. On the other hand the important result is accomplished that the bodies of yarn are not injured and entangling or deformation of the bodies of yarn and untwisting of the threads are avoided. As a further important object of the invention it should be noted that. the temperature during the treatment of the yarn with the liquids may be kept almost constant with great ease, in View of the fact that the yarn according to the invention is aggregated in a comparatively small volume. In accordance with the invention the bodies of yarn are disposed in an inclined position with the additional advantage that the liquid after having passed through the body of yarn is free toflow off from the supporting surface, While the usual horizontal mounting of the articles causes the flow of the liquid to be retarded and the flow of the liquid is stopped at the supporting surfaces, and in consequence thereof the washing time is considerably prolonged. The bodies of 100 yarn according to my invention are arranged at an angle with relation to the direction of flow of the liquid. The arrangement of these bodies, which are disposed at an 5 acute or obtuse angle, is effected in accordance with the so-called packing system, that is to say by the employment of unyielding, firm supporting surfaces and in such a manner that, whenever required, a plurality 10 of such yarn bodies may be placed upon each other and may be exposed to the action of the liquid in this condition. It is one of the important features of this invention that the wound bodies of yarn are not suspended or movably arranged in any other manner.

The yarn, according to this invention, is retained upon fixed supporting surfaces, while being subjected to the action of the liquid. By this means an important advantage is secured in that the flotation of some of the threads of the yarn bodies and other d isturbances are avoided.

The invention will be more fully described by reference to the accompanying drawing which shows by way of illustration and in a diagrammatic manner several exemplifications of means for treating yarn, accord,- ing to my invention. In the drawing Fig. 1 is a diagram showing a rod, bar or plate as a support. Figs. 2 and 3 show inclined somewhat gutter-like supports.

As appears from Fig. 1 of the drawing the treating liquid bathes the threads which are supported in an inclined position, both in the transverse direction as well as in the longitudinal direction thereof, and the distribution of the liquid in the interior of the yarn body will therefore become perfectly uniform and the liquid will be prevented from passing in larger-quantities through some zones of the body than at other places thereof.

In Fig. 2 of the drawing an arrangement is shown adapted to simultaneously rinse a plurality of superimposed layers of yarn bodies with the liquid and to thereby considerably increase the commercial value of the invention. The apparatus according to this modification comprises in its general features an inclined base or supporting plate a and a side plate 0 serving to support the end faces of the bodies of yarn and this side plate 0 is substantially perpendicular to the base plate a. Between the base a and the side wall 0 holes or other openings (1 are provided for the escape of the rinsing liquid. The wall 0 may likewise be provided with holes or grooves for the flowing off of the liquid. The base plate a may be perforated or may comprise grate-like or similarly arranged bars or rods. The discharge of the liquid will be facilitated by providing the base plate with fiutings 0 running in the direction of inclination. The treating 65 liquid is allowed to flow from above onto the yarn in finely divided condition and is mostly caused to drip upon the material.

In Fig. 3, I have shown a modification of an apparatus for carrying out my invention in which the supporting surfaces of. the base comprise relatively inclined plates. lowest parts of the basethe holes (I are provided for the escape of the treating liquid. The other letters of reference in this figure denote parts similar to those shown in Fig. 2.

If devices are used of the type shown in Figs. 2 and 3 the inclined supporting surfaces a may be arranged upon a movable web or apron, and adapted to be fed slowly and with substantially uniform speed below the nozzles or drippers from which the acting liquid is delivered.

As shown in Figs. 1-3, the liquid with which the yarn is treated passes downwardly from a distributing pipe P, which has perforations on its underside.

It will be noted that in the various embodiments described, the yarn is treated by means of a moving stream of liquid which strikes against the yarn, the direction of movement of said stream of liquid being inclined to the yarn.

The stream of liquid may consist of separated drops.

It is to be understood that the invention is not to be limited to anyparticular direction of motion of the stream of liquid or to any specific velocity or velocities of the stream of liquid.

The supports for the yarn may be provided with wheels W, so that said supports can be moved relatively to the streams of liquid.

It should be pointed out that the drawing is merely illustrative and not intended to limit the invention to these particular exemplifications no'r to any details of construction and combinations thereof, and the different stages of treatment may be modified and differently combined in accordance with the particular requirements of the operator, except as otherwise appears from the appended claims.

I claim 1. A method of treating a yarn with a liquid while the yarn is in the form of a mass which is located upon a supporting surface in the form of a plurality of layers, so that said yarn cannot move with respect to said supporting surface, which consists in causing the liquidto move with respect to the strands of the yarn in a direction inclined to said strands, so that part of the liquid moves along said strands.and part of the liquid movesbetween the strands.

2. A method of treating a yarn with a liquid while the yarn is in the form of a stranded mass which is located upon a supporting surface in the form of a plurality At the of layers, so that said yarn cannotmove with respect to said supporting surface, which consists in causing the liquid to move with respect to the strands of the yarn in a direction inclined to said strands, so that part of the liquid moves along, said strands and part of the liquid moves between the strands, the liquid being caused to move in the form of a current, and said current of liquid being caused to directly contact only with a portion of said mass, said portion being directly in the path of movement of said liqui In testimony whereof I afiix my signature. PAUL SPINDLER. 

